RMS voltage and average voltage

Question

Answer 1

(1)

Observe the graph,

The graph resembles the sine wave with  and  sec.

Voltage expression for sine wave: .

Angular frequency .

Here .

Substitute and in expression (1).

Find the RMS voltage using the formula .

.

RMS voltage is 14.14 Volts.

Answer 2

(2)

Find the average voltage .

.

From (1)-bit:  and  sec.

.

Average voltage is 0 Volts.